Mechanical Engineering finds application in all fields of technology. They could work in many industries including private or public sector industries of various types, and their work varies by industry and function. With the rapid rate of expansion in the industrial sector, the employment potential of mechanical engineers is very high. In the government sectors, fresher could join as Junior Engineer, Assistant Engineer (trainee) or Executive Trainee and go up the ladder as Executive Engineers, Superintendent Engineers, and Chief Engineers and so on. These engineers are required in automobile, chemical, electronics, steel plants, oil exploration and refining, technical wing of armed forces, space research organizations, software industries like TCS, Wipro, Infosys and many more, power plants, and transportation etc. Candidates with post graduate degree or an additional management degree could find jobs in administrative and managerial positions in government departments or public and private sector industries or do research as well as teaching in Research and teaching institutes. They could also opt for teaching sales or sales or work as independent consultants. Several government departments and including Post & Telegraphs, Defense, PWD and CPWD, Indian Railways and others employ mechanical engineers to design and maintain their machinery. The machine he or she designs might be a space station, a micro-scale surgical robot or an entire system of energy production and distribution.